/**
 * This file is part of 1genia trampoline
 * Copyright (C) 2007 1genia (contact@1genia.com)
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; version 3 of the License. 
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details. 
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; see the file COPYING.TXT.  If not,
 * write to the Free Software Foundation, Inc., 51 Franklin Street,
 * Fifth Floor, Boston, MA 02110-1301, USA. 
 **/
package com.genia.toolbox.basics.bean.impl;

import org.springframework.util.ObjectUtils;

import com.genia.toolbox.basics.bean.EqualityMethod;

/**
 * implementation of {@link EqualityMethod} for a functionnal equality.
 */
public class FunctionalEqualityMethod
    implements EqualityMethod
{

  /**
   * return the hashCode of an object in respect of the type of equality.
   * 
   * @param obj
   *          the object to inspect
   * @return the hashCode of the objet
   * @see com.genia.toolbox.basics.bean.EqualityMethod#getHash(java.lang.Object)
   */
  public int getHash(Object obj)
  {
    return ObjectUtils.nullSafeHashCode(obj);
  }



  /**
   * returns wether two objects are equals in respect to the type of equality.
   * 
   * @param obj1
   *          the first object
   * @param obj2
   *          the second object
   * @return <code>true</code> if an only if the two object are equals in
   *         respect of the type of equality
   * @see com.genia.toolbox.basics.bean.EqualityMethod#isEqual(java.lang.Object,
   *      java.lang.Object)
   */
  public boolean isEqual(Object obj1, Object obj2)
  {
    return ObjectUtils.nullSafeEquals(obj1, obj2);
  }

}
